US3563402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic gasket rings and gasket linings
Assignee: Individual
•
Filing: 1968-02-09
•
Granted: 1971-02-16
•
Expires: 1988-02-09
Abstract
Abstract Improved gasket linings or rings prepared from novel plastic compositions which are resistant to thermal and mechanical stresses encountered in use, and, when incorporated in a closure, as, for instance, for a glass container, provide a hermetic seal therefor. The plastic compositions comprise a mixture of 50 parts by weight of a polyvinylchloride or a copolymer of vinylchloride with either vinylidene chloride or vinyl acetate, 10-100 parts by weight of a plasticizer into which there has been incorporated 5200 parts by weight of synthetic rubber. The mixture, after having been worked to form a homogeneous paste, is flowed onto the inner surface of a metal cap, hood, or like closure and thereafter heat treated whereby the plastic is converted into a gel. Following cooling, the gel is converted into a viscous and coherent film and constitutes the gasket ring or lining.
Inventors
- 👤 Heinrich Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:41
CPC Classifications
B; B65; B65D; B65D53/00; B65D53/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
36 words
An improved gasket ring or lining according to claim 1 wherein said nonvolatile plasticizer is a member selected from the group consisting of tricresylphosphate, acetyltributyl-citrate, dioctylphthalate, di-iso-octylpthalate, di-nonylphthalate, di-decylphthalate, sebacic acid di-ester, and adipic acid di-ester.
Claim 2
Dependent Claim
32 words
An improved gasket ring or lining according to claim 1 wherein said synthetic rubber is a member selected from the group consisting of butadiene-styrene-copolymer, butadiene-acrylonitrile copolymer, polychloroprene, chlorosulfonated polyethylene, and mixtures thereof.
Claim 3
Dependent Claim
32 words
An improved gasket ring or lining according to claim 1 wherein said rubber has a particle size at which 100 percent thereof is able to pass through a Tyler sieve No. 14.
Claim 4
Dependent Claim
32 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition contains a plasticizer in an amount of 20 -200 percent by weight referred to the polyvinyl chloride.
Claim 5
Dependent Claim
32 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition additionally contains at least one member selected from the group consisting of lubricating agents, pigments and fillers.
Claim 6
Dependent Claim
56 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition consists essentially of the following: 50 parts by weight of polyvinyl chloride 100 parts by weight of tri-cresyl phosphate 50 parts by weight of butadiene acrylonitrile polymer 0.5 parts by weight of a lubricant 2 parts by weight of titanium dioxide
Claim 7
Dependent Claim
55 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition consists essentially of the following: 50 parts by weight of polyvinyl chloride 40 parts by weight of di-iso-octylphthalate 50 parts by weight of butadiene acrylonitrile copolymer 0.5 parts by weight of a lubricant 2 parts by weight of titanium dioxide
Claim 8
Dependent Claim
62 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition consists essentially of the following: 50 parts by weight of a copolymer of vinylchloride and vinylidene chloride 100 parts by weight of didecyl phthalate 200 parts by weight of butadiene-styrene copolymer 5 parts by weight of iron oxide red 5 parts by weight of a lubricating agent
Claim 9
Dependent Claim
56 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition consists consists essentially of the following: 30 parts by weight of polyvinyl chloride 40 parts by weight of acetylbutylcitrate 5 parts by weight of butadiene acrylonitrile copolymer 1 part by weight of calcium recinoleate 5 parts by weight of barium sulfate
Claim 10
Dependent Claim
68 words
An improved gasket ring or lining according to claim 1 wherein said plastic resin composition consists essentially of the following: 30 parts by weight of polyvinyl chloride 40 parts by weight of acetylbutylcitrate 5 parts by weight of butadiene copolymer 1 part by weight of calcium ricinoleate 5 parts by weight of barium sulfate 1 part by weight of oleic acid amide 1 part by weight of paraffin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |